EP 1094950 A1 20010502 - PIXEL INTENSITY CONTROL IN ELECTRO-OPTIC MODULATORS
Title (en)
PIXEL INTENSITY CONTROL IN ELECTRO-OPTIC MODULATORS
Title (de)
INTENSITÄTSSTEUERUNG VON BILDELEMENTEN IN ELEKTROOPTISCHEN MODULATOREN
Title (fr)
COMMANDE DE L'INTENSITE DES PIXELS DANS DES MODULATEURS ELECTRO-OPTIQUES
Publication
Application
Priority
- EP 00917829 A 20000310
- EP 99104942 A 19990312
- EP 99104943 A 19990312
- EP 99112797 A 19990702
- US 0006274 W 20000310
- US 29082899 A 19990413
- US 29082999 A 19990413
- US 13603599 P 19990526
Abstract (en)
[origin: WO0053422A1] A laser imager comprises a modulator with an array of electrodes to control picture elements individually or by groups to produce images on a recording plane. The light intensity of each picture element or group of elements is determined by electrical potential applied between sets of controlling electrodes. These levels can be manually set or automatically exercised during a balancing routine through a feed-back loop using a photodetector to monitor and detect elements producing a light intensity higher than a set value. Control means assign to these elements a "correction voltage" to lower the density of elements they control. These correction values obtained after one or repeated balancing routines are stored in a memory and are used during the imaging cycle to produce images of substantially equal intensity on the recording medium. Different electrode arrangements to control the intensity of picture elements can be applied to different kinds of modulators and for different power levels of radiated energy.
IPC 1-7
IPC 8 full level
B41C 1/055 (2006.01); B41J 2/447 (2006.01); G02F 1/03 (2006.01); G06K 15/12 (2006.01); H04N 1/12 (2006.01); H04N 1/401 (2006.01); G03F 7/20 (2006.01)
CPC (source: EP)
G06K 15/1238 (2013.01); G06K 15/1271 (2013.01); H04N 1/121 (2013.01); H04N 1/4015 (2013.01); G03F 7/2055 (2013.01); G03F 7/2057 (2013.01)
Citation (search report)
See references of WO 0053422A1
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
WO 0053422 A1 20000914; AU 3874000 A 20000928; CA 2329912 A1 20000914; DE 60031628 D1 20061214; DE 60031628 T2 20070913; EP 1094950 A1 20010502; EP 1094950 B1 20061102; JP 2003523841 A 20030812
DOCDB simple family (application)
US 0006274 W 20000310; AU 3874000 A 20000310; CA 2329912 A 20000310; DE 60031628 T 20000310; EP 00917829 A 20000310; JP 2000603882 A 20000310